Norm MacDonald: Comedian Norm MacDonald is in town tonight. The former SNL alum and stand-up comedian will be at Helium through Sunday. Known for his dead on impersonations and witty humor, MacDonald is sure to leave audiences wanting more --good thing, because his new movie, Grown Ups, co-starring Adam Sandler, will be out this summer. Helium Comedy Club, 2031 Sansom Street, Philadelphia, Pa. 19103, +21, $25, 8 p.m.

Ke$ha in AC: Hollywood wild child, Ke$ha, is in AC tonight with Dirt Nasty. The rap electronic group and pop princess known for hits like “Tik Tok” and “Blah Blah Blah” will be at the Music Box in the Borgata. The show starts at 9 p.m., but if you miss it, make sure you stop at the official after-party at Mixx, Borgata’s premiere nightclub. Music Box at the Borgata, One Borgata Way, Atlantic City, N.j. 0840, +21, $28-$40, 9 p.m.